ERICA 



given as much air as possible. It is well to bring the 

 Ericas out of the greenhouse as early in the spring as 

 possible. The pots should be plunged in a good situation, 

 where plenty of air and sunlight can be had. They should 

 be wintered in a greenhouse extremely well ventilated, 

 and a temperature not higher than from 40 to 45 F. 

 When in bud the plants should not be allowed to dry out 

 too much. Once would be enough to cause the loss of 

 all the buds. Very often the Heaths are attacked by a 

 disease similar to mildew, caused by an excess of hu- 

 midity in the air. As this disease is very contagious, it is 

 well, as soon as noticed, to use sulphur in powder or sul- 

 phate of copper in solution until the plants are rid of it. 

 Index of species described below: 



assurgens, 13. gracilis, 7. prsestans, 6. 



Eothwelliana, 17. herbacea, 1. regerminans, 3. 



Caffra, 13. hiemalis, 5. Tetralix, 4. 



carnea, 1. hyemalis, 5. translucens, 18. 



Cavendishiana, II. Lusitanica, 14. vagans, 2. 



Cavendishii, 11. Mediterranea, 16. ventricosa, 17. 



codonodes, 14. melanthera, 8. Vilmoreana, Wil- 



cupressina, 15. Parmentierii, 6. moreana and Wil- 



cylindrica, 12. persoluta, 13. morei, 10. 



fragrans, 9. 



A. Hardy Heaths. 



B. Spring -blooming 1. carnea 



BB. Summer- and fall-blooming. 



c. Inflorescence lateral 2. vagans 



cc. Inflorescence terminal. 



D. Ovary densely covered with 



long, rough hairs 3. stricta 



DD. Ovary with short, soft hairs. 4. Tetralix 

 AA. Tender Heaths. 

 B. Fall-blooming, 

 c. Corolla club-shaped or funnel- 

 shaped 5. hyemalis 



CC. Corolla widest at base, taper- 

 ing to a much constricted neck. 6. praestans 

 CCC. Corolla globose, the lobes very 



short 7. gracilis 



BB. Christmas -blooming. 



c. Corolla lobes long and spread- 

 ing 8. melanthera 



CC. Corolla lobes long and revolute 9. fragrans 

 CCC. Corolla lobes short and rather 



erect 10. Wilmorei 



BBB. JK 'aster '-blooming . 



c. Fls. yellow 11. Cavendishiana 



CC. Fls. rosy to white. 



D. Corolla tubular 12. cylindrica 



DD. Corolla globose. 

 E. Lvs. in threes. 



F. Fls. white 13. persoluta 



FP. Fls. rosy 14. Lusitanica 



EE. Lvs. in fours 15. cupressina 



DDD. Corolla urn-shaped , i. e., 

 longer than DD, and more 



constricted at the neck 16. Mediterranea 



DDDD. Corolla ventricose, i. e., 

 swelled at the base, and 

 tapering slowly to a nar- 

 row neck 17. ventricosa 



18. translucens 



1. carnea, Linn. (E. herbacea, Linn.). Height 6 in.: 

 Ivs. in 4's : inflorescence lateral : corolla broadly bell- 

 shaped: anthers exserted: ovary glabrous. Mar.-May. 

 Alps. L.B.C. 15:1452. B.M. 11. Gn. 54:1177 (a charm- 

 ing picture). The bright rosy-fld. form is the best and 

 most striking. There are pale red and pure white varie- 

 ties. The most popular of all hardy Ericas. Very easily 

 prop, by division. We should try E. Mediterranea, var. 

 hybrida, Hort., said to be a cross with E. carnea, and in 

 England thriving almost as well in loam as in peat. See 

 Gn. 55, p. 125, and 54, p. 262. 



2. vagans, Linn. CORNISH HEATH. Lvs. in 4's or 5's: 

 sepals small, ovate, obtuse ; corolla ovate-bell-shaped; 

 anthers ovate-oblong, 2-parted, exserted : ovary not 

 hairy. W. Eu. and Medit. Fls. pale purplish red. 

 Grows 3-4 ft. in England; 1 ft. with J. W. Manning, 

 Reading, Mass. Var. alba has white fls. Var. capitata, 

 grows 1-2 ft. high with Meehan at Germantown, Pa., 

 and has "small whitish fls. with a purplish tip." 



ERICA 



541 



3. stricta, Don. COBSICAN HEATH. Lvs. in 4's, a little 

 more erect than in Nos. 3 and 5 : sepals lanceolate, ob- 

 tuse ; corolla ovoid-oblong, narrowed at the throat ; an- 

 thers awl-shaped or awned, included : ovary densely 

 covered with long, rough hairs. Corsica. Attains 4 ft. 

 in England, but grows 1-2 ft. high with Meehan, at Ger- 

 mantown, Pa. Branches strict, rigid. 



4. Tetralix, Linn. BELL HEATHER. CROSS-LEAVED 

 HEATH. Lvs. in 4's, margin folded back: fls. rosy; se- 

 pals ovate-lanceolate, ciliate ; anthers awl-shaped or 

 awned, included : ovary with short, soft hairs. W. Eu. 

 Foliage grayish. Height in England 6-12 in. With 

 Manning, at Reading, Mass., about 8 in. 



5. hyemalis, Hort. Fig. 771. Written also hiemalis. 

 Watson thinks it may be a winter-flowering form of E. 

 perspicua, figured in L.B.C. 2:102 and 18:1778 as E. 

 Linnceana. Fls. rosy pink, tipped white. Var. alba has 

 white fls. With L. Dupuy, Whitestone, L. I., it flowers 

 in Sept. G.F. 5:137. Gn. 41:856. H. D. Darlington 

 says it is very distinct from E. perspicua. 



6. praestans, And. (E. Parmentierii, Loddiges). Lvs. 

 in 4's, somewhat incurved: bracts crowded : fls. nearly 

 sessile, white, faintly flushed pink at base, in terminal 

 groups of 4 or more ; sepals ovate, rough -margined ; an- 

 thers scarcely acute. Sep. Varieties are pictured under 

 various names in L.B.C., plates 154, 1695, 197 and 1804. 



7. gracilis, Salisb. Lvs. in 4's, somewhat erect: 

 bracts remote : sepals smaller, lanceolated ; anthers 

 with a short, sharp point. L.B.C. 3:244 (pale violet). 

 "Fls. purplish red." Var. autumnalis, Hort. Fls. Sep. 

 Var. vernalis, fls. in Oct. and Nov. 



8. melanthera, Linn. Fig. 772. Lvs. in 3's, obtuse, 

 grooved on the back, younger ones often rough, with 

 glands; bracts mostly crowded: fls. rosy; sepaLs obo- 



772. Erica melanthera. 



vate, keeled, colored; anthers black: ovary villous. 

 Not L.B.C. 9:867, which may be a form of E. nigrita. 

 Flowers in Dec. and Jan. A.F. 11:1133 and 12:579. 

 F.E. 9:333. 



9. fragrans, And., not Salisb. Lvs. opposite, erect- 

 appressed, acute, always glabrous : bracts loose, sepal- 

 like: fls. in 2's ; sepals ovate, keeled, green: ovary 

 glabrous or slightly bristly at the tip. Habitat? B.M. 

 2181. L.B.C. 3:288. 



10. Wilmorei, Knowles &Westc. (A. Wilmoredna and 

 Vilmoreana, Hort.). Hybrid : corolla tubular, bulged 

 below the lobes, slightly velvety-hairy : fls. in l's-3's, 

 rosy, tipped white. R.H. 1892, p. 202. A.F. 4:251. G.C. 

 III. 19:201. Var. glauca, Carr., has nearly glaucous 

 foliage. Var. calyculata, Carr., has a large additional 

 calyx. R.H. 189.2, p. 203. In England flowers in spring. 



